PlainWater
Counties → Texas

Starr County, Texas

Water Systems
11
Population Served
69,431
Total Violations
2,339
578 health-based
PFAS Detected
7
of 7 tested

Violation Analysis

100.0%
Systems with Violations
212.6
Avg Violations per System
24.7%
Health-Based Violations

Water Source Types

SW
9 systems (82%)
GW
2 systems (18%)

PFAS Contamination

7
Systems Tested
7
PFAS Detected
100.0%
Detection Rate

PFAS (per- and polyfluoroalkyl substances) are persistent chemicals found in drinking water. The EPA has set enforceable limits for several PFAS compounds under UCMR5 monitoring.

Compliance Snapshot

Starr Texas water systems by violation status, EPA SDWIS records.

No violations on record (0) One or more violations (11)

Violation history is cumulative, many flagged systems have already returned to compliance. Detail pages show per-system context.

Water Systems

System Name Population Violations PFAS
City of Roma 19,464 296 Detected
City of Rio Grande City 18,912 76 Detected
City of la Grulla 9,500 222 Clean
Rio WSC 6,639 168 Detected
Union WSC 5,793 64 Detected
Falcon Rural WSC 3,600 143 Clean
El Tanque WSC 3,000 54 -
El Sauz WSC 2,223 278 Clean
San Isidro Isd 227 106 -
Ibwc Falcon Village 48 554 -
1017 Cafe 25 378 -

Other Counties in Texas

Harris County
1,292 systems · 6,016,117 served · 78,495 violations
Dallas County
37 systems · 3,180,170 served · 2,618 violations
Bexar County
82 systems · 2,376,579 served · 13,955 violations
Tarrant County
113 systems · 2,099,244 served · 10,564 violations
Travis County
138 systems · 1,547,700 served · 7,557 violations
Collin County
35 systems · 1,246,210 served · 1,149 violations

Drinking Water Guides

Frequently Asked Questions

How many water violations are in Starr County? ▼
Starr County has 2,339 total drinking water violations across 11 water systems, of which 578 are health-based violations. 100.0% of systems have at least one violation.
How many people get water from Starr County systems? ▼
Water systems in Starr County serve approximately 69,431 people through 11 public water systems.
Has PFAS been detected in Starr County water? ▼
Of 7 water systems tested for PFAS in Starr County, 7 had PFAS detected (100.0% detection rate).
What types of water sources supply Starr County? ▼
Water systems in Starr County use SW (9 systems), GW (2 systems) as their primary water sources.
Are health-based violations serious? ▼
Health-based violations indicate that drinking water exceeded Maximum Contaminant Levels (MCLs) set by the EPA or failed treatment technique requirements. 24.7% of Starr County's violations are health-based. Not all violations indicate immediate health risk, but they require corrective action.
Data Sources & Methodology

Drinking water violation data from the EPA Safe Drinking Water Information System (SDWIS). PFAS testing data from the UCMR5 monitoring program. SDWIS tracks all public water systems regulated under the Safe Drinking Water Act.

Violations are categorized as health-based (Maximum Contaminant Level exceedances, treatment technique failures) or monitoring/reporting violations. Not all violations indicate an immediate health risk.

Read our methodology - how this data is sourced, computed, and verified.

Data sourced from EPA SDWIS and UCMR5 PFAS monitoring data. See our methodology for details. Retrieved and formatted by PlainWater Editorial

Every figure on PlainWater is rendered directly from EPA SDWIS drinking-water data, no number is typed in by an editor. This page draws directly on EPA SDWIS data, no figure is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error.